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GS520B7-42W — STUD,TURNLOCK FASTENER

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

GS520B7-42W: STUD,TURNLOCK FASTENER.

The STUD,TURNLOCK FASTENER is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, grip_length: 0.540 INCHES MINIMUM AND 0.560 INCHES MAXIMUM IN, head_length: 0.875 INCHES NOMINAL IN, stud_head_height: 0.312 INCHES NOMINAL IN, shank_neck_length: 0.520 INCHES MINIMUM AND 0.540 INCHES MAXIMUM IN, surface_treatment: CADMIUM OVERALL. This part is cataloged in the U.S.

Government catalog under NSN 5325-01-268-5845, indicating validated use in U.S. government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels.

Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
GS520B7-42W
NSN: 5325-01-268-5845
FSC: 5325 — Fastening Devices
CAGE: 26512 — NORTHROP GRUMMAN SYSTEMS CORPORATION (USA)
SPECIFICATIONS
materialSTEEL OVERALL
grip_length0.540 INCHES MINIMUM AND 0.560 INCHES MAXIMUM IN
head_length0.875 INCHES NOMINAL IN
stud_head_height0.312 INCHES NOMINAL IN
shank_neck_length0.520 INCHES MINIMUM AND 0.540 INCHES MAXIMUM IN
surface_treatmentCADMIUM OVERALL
securing_device_typeGROMMET
turnlock_stud_head_styleFILLISTER WING
stud_shank_major_diameter0.212 INCHES MINIMUM AND 0.217 INCHES MAXIMUM IN
turnlock_stud_shank_styleSTUD SHANK
material_accommodated_thickness0.391 INCHES MINIMUM AND 0.420 INCHES MAXIMUM IN
surface_treatment_document_and_classificationQQ-P-416,TY 1,CL 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
NSN5325-01-268-5845
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: GS520B7-42W · OEM ⚠ VERIFY BEFORE ORDERING Verify thread pitch before ordering — metric (M8×1.25) ≠ imperial (5/16-18). Wrong thread = wrong part. Grade/class stamped on bolt head determines tensile strength ✓ BROKER TIP Grade/class stamped on head determines tensile strength. Grade 8 > Grade 5 > Grade 2. Always confirm head marking matches specification requirement PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-416,TY 1,CL 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
•
HEAD LENGTH: 0.875 INCHES NOMINAL IN
•
MATERIAL ACCOMMODATED THICKNESS: 0.391 INCHES MINIMUM AND 0.420 INCHES MAXIMUM IN
•
TURNLOCK STUD SHANK STYLE: STUD SHANK
•
STUD HEAD HEIGHT: 0.312 INCHES NOMINAL IN
•
SHANK NECK LENGTH: 0.520 INCHES MINIMUM AND 0.540 INCHES MAXIMUM IN
•
SECURING DEVICE TYPE: GROMMET
•
TURNLOCK STUD HEAD STYLE: FILLISTER WING
TECHNICAL CHARACTERISTICS
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-416,TY 1,CL 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
HEAD LENGTH0.875 INCHES NOMINAL IN
MATERIAL ACCOMMODATED THICKNESS0.391 INCHES MINIMUM AND 0.420 INCHES MAXIMUM IN
TURNLOCK STUD SHANK STYLESTUD SHANK
STUD HEAD HEIGHT0.312 INCHES NOMINAL IN
SHANK NECK LENGTH0.520 INCHES MINIMUM AND 0.540 INCHES MAXIMUM IN
SECURING DEVICE TYPEGROMMET
TURNLOCK STUD HEAD STYLEFILLISTER WING
STUD SHANK MAJOR DIAMETER0.212 INCHES MINIMUM AND 0.217 INCHES MAXIMUM IN
SURFACE TREATMENTCADMIUM OVERALL
OTHER ITEMS IN FSC 5325 — Fastening Devices
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5325-00-000-1884 5325-00-000-9988 5325-00-001-1567 5325-00-001-2043 5325-00-001-3842 5325-00-001-3858 5325-00-001-3871 5325-00-001-4317
SUBSTITUTES & CROSS-REFERENCES 5
50-007W42Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
AW35T42Reference document
Same NSN cross-reference
Reference document — Secondary reference
2351-W20-42-C3CSame NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
AW3 1/2T42Reference document
Same NSN cross-reference
Reference document — Secondary reference
04-AW35T42Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is GS520B7-42W?
GS520B7-42W is a STUD,TURNLOCK FASTENER.
What parts can replace GS520B7-42W?
There are 5 known substitutes for GS520B7-42W: 50-007W42, AW35T42, 2351-W20-42-C3C and 2 more. Substitute compatibility should be verified for your specific system.
What is the NSN for GS520B7-42W?
GS520B7-42W is cataloged in the U.S. Government catalog under NSN 5325-01-268-5845. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.